the affordable care act has hit the 4 million mark. the pace is still short of the administration's goal of 6 million by the end of next month. that's the deadline to sign up for coverage this year. numbers show a low number of younger people also signing up. only about 27% of enrollees. officials hope more would take part to help offset the expense of healthcare for older participants. >>> president obama threatening to pull all american troops out of afghanistan by the end of the year if the afghan government refuses to agree on terms to keep them there. it's a battle of wills between president obama and afghan president, hamid karzai. the two leaders spoke by phone yesterday for the first time in months. president kay die is refusing to sign -- kay karzai is refusing to offer an agreement to offer protection to u.s. troops if they say. >> i think we've made it clear that we are willing to keep a presence in afghanistan and that we want to continue to help the afghan forces and work in counterterrorism but we can't do that without a